Cnei
[醫][=composite noise exposure index]復合噪聲暴露指數
??? 情景例句
He cancelled his appointment.
他取消約會了。
It's a sunny day.
今天是個艷陽天。
She walked slowly into the hall and at once noticed that all the room doors were open,
她慢慢地走進前廳，立即發現所有的房門都敞開著，